package de.jeyp91.tippliga;

import de.jeyp91.apifootball.APIFootballMatch;
import de.jeyp91.teamidmatcher.TeamIDMatcher;
import de.jeyp91.tippligaforum.TippligaConfigProvider;
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;

import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.util.ArrayList;

public class TLWMatchesManagerBase {

    protected int season;
    protected int league;
    protected int numberOfMatchdays;
    protected int matchesPerMatchday;
    protected int ko;

    protected JSONArray matchdayConfig;

    protected void initConfigParamsFromFile(String configFileName) {

        TippligaConfigProvider prov = new TippligaConfigProvider(this.season);
        JSONObject config = prov.getTippligaConfig(configFileName);
        this.numberOfMatchdays = ((Long) config.get("numberOfMatchdays")).intValue();
        this.matchdayConfig = (JSONArray) config.get("matchdayConfig");
        this.ko = ((Long) config.get("ko")).intValue();
    }

    public static ArrayList<TLWMatch> getMatchesStartingFromSecondDay(ArrayList<TLWMatch> matches) {
        LocalDateTime firstMatchtime = getFirstMatchtimeTLW(matches);
        ArrayList<TLWMatch> filteredMatches = new ArrayList<>();
        for(TLWMatch match : matches) {
            LocalDateTime matchDateTime = getDate(match);
            if(getDaysDifference(matchDateTime, firstMatchtime) != 0) {
                filteredMatches.add(match);
            }
        }
        return filteredMatches;
    }

    public static ArrayList<TLWMatch> getMatchesStartingFromSecondWeek(ArrayList<TLWMatch> matches) {
        LocalDateTime firstMatchtime = getFirstMatchtimeTLW(matches);
        ArrayList<TLWMatch> filteredMatches = new ArrayList<>();
        for(TLWMatch match : matches) {
            LocalDateTime matchDateTime = getDate(match);
            if(getDaysDifference(matchDateTime, firstMatchtime) > 6) {
                filteredMatches.add(match);
            }
        }
        return filteredMatches;
    }

    public static LocalDateTime getFirstMatchtimeTLW(ArrayList<TLWMatch> matches) {
        LocalDateTime matchtime = null;
        for(TLWMatch match : matches) {
            LocalDateTime matchtimeTemp = getDate(match);
            if(matchtime == null) {
                matchtime = matchtimeTemp;
            } else {
                if(matchtimeTemp.isBefore(matchtime)) {
                    matchtime = matchtimeTemp;
                }
            }
        }
        return matchtime;
    }

    public static LocalDateTime getFirstMatchtimeAPIFootball(ArrayList<APIFootballMatch> matches) {
        LocalDateTime matchtime = null;
        for(APIFootballMatch match : matches) {
            LocalDateTime matchtimeTemp = getDate(match);
            if(matchtime == null) {
                matchtime = matchtimeTemp;
            } else {
                if(matchtimeTemp.isBefore(matchtime)) {
                    matchtime = matchtimeTemp;
                }
            }
        }
        return matchtime;
    }

    public static LocalDateTime getDate(TLWMatch match) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
        LocalDateTime dateTime = LocalDateTime.parse(match.getMatchDateTime(), formatter);
        return dateTime;
    }

    public static LocalDateTime getDate(APIFootballMatch match) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");
        LocalDateTime dateTime = LocalDateTime.parse(match.getMatchDateTime().substring(0, 19), formatter);
        return dateTime;
    }

    public static int getDaysDifference(LocalDateTime date1, LocalDateTime date2) {
        date1 = date1.toLocalDate().atTime(0, 0, 0);
        date2 = date2.toLocalDate().atTime(0, 0, 0);
        return (int) date1.until(date2, ChronoUnit.DAYS);
    }

    protected TLWMatch getMatchingMatch(APIFootballMatch apiFootballMatch, ArrayList<TLWMatch> tlwMatches) throws NullPointerException{
        int foundMatches = 0;
        TLWMatch matchingMatch = null;
        for(TLWMatch match : tlwMatches) {
            Integer apiTeamIdHome = TeamIDMatcher.getTippligaIdFromApiFootballId(apiFootballMatch, TeamIDMatcher.HOME);
            Integer apiTeamIdGuest = TeamIDMatcher.getTippligaIdFromApiFootballId(apiFootballMatch, TeamIDMatcher.GUEST);
            int tlwTeamIdHome = match.getTeamIdHome();
            int tlwTeamIdGuest = match.getTeamIdGuest();

            if(apiTeamIdHome == null
                    || apiTeamIdGuest == null) {
                throw new NullPointerException();
            }
            if(
                    apiTeamIdHome.equals(tlwTeamIdHome)
                            && apiTeamIdGuest.equals(tlwTeamIdGuest)
            ) {
                foundMatches++;
                matchingMatch = match;
            }
        }
        return matchingMatch;
    }
}